Tape dispenser



A118- 4 1964 A. P. KRUEGER 3,143,019

TAPE DISPENSER Filed Feb. 27. 1961 4 Sheets-Sheet 1 f/frcd R Krueger gm@a/Mz,

ATTORNEYS Aug. 4, 1964 A. P. KRUEGER 3,143019 TAPE DISPENSER Filed Feb.27. 1961 4 -Shee'cs--Sheeb 2 ATTORNEYS Aug- 4, 1964 A. P. KRUEGER3,143,019

TAPE DISPENSER Filed Feb. 27. 1961 4 Sheets-Sheet 3 H/frcd R KrueqfINVENTOR ATTORNEY A. P. KRUEGER 4TAPE DISPENSER Aug. 4, 1964 4Sheets-Sheet 4 Filed Feb. 27. 1961 H/frcd P, Krueger ATlfoRNEY UnitedStates Patent O 3,143,619 TAPE DISPENSER Alfred 1. Krueger, Sonthbury,Conn., assigner to Minnesoia Mining and Manufacturing Company, St. Paul,Minn., a cci-poration of Delaware Filed Feb. 27, 1961, Ser. No. 91,82013 Cinirns. (Cl. E53-224) This invention relates to tape dispensers andrelates more particularly to a dispenser for pressure-sensitive tape ortape which is tacky on one or both sides thereof.

One object of the invention is to provide a tape dispenser having animproved tape-feeding roll to which the tape adheres and from which tapemay be readily stripped by manual operation.

Another object is to provide in such a dispenser improved rneans forsevering lengths of tape served from the dispenser.

Still another object is to provide in such a tape dispensertape-severing means cooperating with the feed roll to sever tape in anovel and improved manner.

A further object is to provide in such a dispenser means to move thefeed roll for a limited distance in either rotary direction to align oneof a plurality of tape-severing stations on the feed roll with thecutitng blade of the tape-severing means.

Another object of the invention is to provide in a tape dispenser, suchas characterized above, self-operating means for effecting slack in thetape between the supply roll and the feed roll to facilitate relativealignment of the cutitng blade with one of the tape-severing stations onthe feed roll.

Further objects will be apparent from the following detailed descriptionof one form of the tape dispenser:

In the drawings:

FIG. l is a side elevational view, partially broken away illustrating atape dispenser embodying the invention;

FIG. 2 is a top plan view of the dispenser;

FIG. 3 is an elevational view, partially in section, showing the frontend of the dispenser;

FIG. 4 is an enlarged sectional View taken on line 4 4 of FIG. 3;

FIG. 5 is a view similar to FIG. l showing certain parts of thedispenser in different positions;

FIG. 6 is a side elevational veiw of a modified form of the dispenser;

FIG. 7 is a sectional view taken on line 7 7 of FIG. 6;

FIG. 8 is a sectional view taken on line 8 3 of FIG. 7;

FIG. 9 is a sectional View taken on line 9 9 of FIG. 7;

FIG. l0 is a diagrammatic view illustrating the electrical circuitry ofthe modified form;

FIG. ll is a fragmentary elevational view, partially in section,illustrating a modified form of a clutch mechanism which may be employedin the tape dispenser; and

FIG. 12 is a fragmentary elevational View, partially in section and on alarger scale, further illustrating the clutch mechanism of FIG. ll.

In the form shown in FIGS. 1 'through 5 of the drawings, the upstandingside walls of the dispenser are indicated at 19 and 11, the walls beinginterconnected by lower plate-like parts 12 at the respective front andrear end portions of the dispenser and provided with downwardlyprojecting pads 13 on which the dispenser may rest on a support, such asa table or the like. Intermediate the side walls and supported therefromis a tap-feeding roll, indicated generally at 14, and a tape supplyspool, indicated generally at 15, supporting a tape roll 16. Tape fromthe roll 16, which is trained over a peripheral portion of the feed roll14, is advanced in the instant form by rotation of the last-mentionedroll through manual operation of an operating lever 17, as will appearmore 3,143,313 Patented Aug. 4, 1964 fully hereinafter. The dispenser isprovided with movable tape-severing means, indicated generally at 18,which is moved to a tape-clearing and inoperative position by movementof the lever 1'7 in one direction, and which is spring biased in theother direction, all as will appear more fully hereinafter.

As shown in FIG. 1, a slideway 19 is formed on the inner face of theupstanding side wall 10 of the dispenser, the slideway extendinggenerally rearwardly of the dispenser and being inclined somewhatupwardly. The slideway 19 on the side wall 10 is arranged in opposingrelationship to a similar slideway formed on the inner face of the sidewall 11. Each slideway may be formed by spaced-apart plate-like parts 20and 21 of elongated form fixed to the respective side walls. The spool15 is supported for sliding movement generally forwardly and rearwardlyon a slide, indicated generally at 22, extending between and mounted inthe aforementioned slideways.

The slide 22 in the illustrated form is of U shape and has the arms 23thereof, which are of plate-like form, received in the respectiveslideways 19. Near one of the slideways 19 the portion 24 of the slide22, which interconnects the arms 23, is provided with a forwardlyprojecting cam lug 25, shown to advantage in FIGS. l and 2. The distalends of the arms 23 are notched, as at 26, to receive the respectiveends of a spindle 27 supporting the spool 15, the spool having a hub 2Sthrough which the spindle extends. The spool may be locked axially onthe spindle 27 in any conventional manner so that the spool may beproperly positioned with reference to the tape-feeding roll 14.

As shown in FIG. 2, the tape spool 15 may be of greater width than thetape roll 16. The spool 15 is axially positioned on the spindle 27 withreference to the axial position of the feed roll 14 so that asubstantial portion of the tape overlaps one side of the feed roll, asshown in the last-mentioned view. Thus, when the tape is fed out of thedispenser by the action of the feed roll, it may be readily grasped bythe user at the last-mentioned side of the roll 14 for removal from theroll after it has been severed in a manner which will appearhereinafter.

The operating lever 17 normally rests against the outwardly projectingstop 29 on the side wall 10 of the dispenser, and one end of the lever17 is fast to a shaft 30 which extends from the lever at the right sideof the dispenser, as viewed from the front, through the side wall 10 andinto the side wall 11, the shaft 30 being journalled in theaforementioned side walls. Intermediate the side walls 10 and 11 andnear the former a gear 31 is provided on the shaft 30, the gear meshingwith a pinion 32 supported from a stub shaft 33 mounted in the side wall10 of the dispenser. The gear 31 is not fast on the shaft 30, but isconnected to the latter through a conventional one-way clutch 30a which,on rotation of the shaft 30 in a clockwise direction as viewed in FIG.l, drives the gear 31 in the same direction, but which permits the shaft30 to be rotated in the other direction without driving the gear 31. Theclutch 30a, which forms a lost-motion driving connection between theshaft 30 and the gear 31, may be constructed in accordance with thedisclosure of U.S. Patent No. 2,866,- 502, for example. Forwardly and ina plane above the shaft 30, a shaft 34 extends between the side walls 10and 11 and is journaled therein, the shaft carrying in xed relationthereto a gear 35 meshing with the pinion 32. It will be understood fromthe foregoing that when the lever l'lis swung forwardly from thebroken-line position of FIG. l, the gear 31, meshing with the pinion 32which meshes with gear 35, is driven in a direction to rotate the shaft34 in a clockwise direction as viewed in FIG. l. The shaft 34 supportsand is angularly rigid with the feed roll 14. Hence, when the operatinglever is swung clockwise from its normal or rest position, shown in FIG.l, the feed roll 14, to which the end portion of the tape extending fromthe tape roll 16 adheres, is rotated in a direction to advance the tape,stripping the tape from the roll 16. The tape may be fed forwardly bythe feed roll through movement of the lever 17 from the rest position toany position intermediate the rest position and a forward abutment forthe lever, such as the usual adjustable stop, not shown. As shown, thefeed roll may be of relatively large diameter, and the gearing, whichdrives the last-mentioned roll, may be such that the feed roll isrotated through approximately 90 degrees or more by movement of theoperating lever 17 from the rest position to the aforementioned forwardabutment. As indicated in the drawings, the feed roll projects forwardlyof leading edge portions of the side walls of the dispenser. A springwasher 33a on the stub shaft 33 bears against the pinion 32 and tends toprevent reverse rotation of the gearing and the feed roll to anyundesirable extent.

In this illustrated form, a tape-guiding roll 36 is provided extendingbetween the side walls and 11 and journaled therein. This roll, whichmay be knurled, may be positioned with reference to the feed roll 14 sothat tape passing under the roll 36 from the tape roll 16 is deflectedtoward the feed roll 14 to adhere to a substantial peripheral portion ofthe last-mentioned roll prior to passing over the axis of thelast-mentioned roll as the tape is fed forwardly. The resultingsubstantial area of tape adhering to the feed roll 14 effects greaterpull of the feed roll on the tape and facilitates the stripping actionof the feed roll, that is, the stripping of the tape from the supplyroll 16. As shown in FIGS. 1 and 3, the peripheral surface of the feedroll may be roughened. The tape-guiding roll 36 is removably mounted inthe side Walls lll and 11.

The feed roll 14, at rather closely spaced intervals around thecircumference thereof, is provided with means defining substantiallyradially extending slots, indicated at 37, constituting tape-severingstations on the feed roll. These slots extend inwardly from theperiphery of the roll 14 and may terminate approximately one-half inchfrom the periphery of the roll, for example. In the illustrated form,each slot has substantially parallel side walls and a substantially atend wall, but this formation of the slots is not critical, as will bemanifest hereinafter. As previously indicated, the tape-severing means1S of the dispenser may cooperate with any one of the tapeseveringstations 37 on the feed roll 14.

As shown in FIG. l, a slideway 33 is provided on the inner face of theside wall 19, the slideway being constituted by vertically arrangedlaterally spaced-apart plate-like parts 39 and 4i) of elongated formfixed to the side wall 10. In opposing relation to the slideway 3S thereis provided on the inner face of the side wall 11 a slideway 41constituted by plate-like parts 42 and 43 of similar construction to thepreviously mentioned parts 39 and 46 and arranged in a similar manner.The tape severing means 18 comprises a blade element, indicatedgenerally at 44, which is substantially of inverted U shape, having arms45 and 46 slidably received in the slideways 38 and 41, respectively.These arms are interconnected by a portion 47 of the blade element, andthe blade element straddles the feed roll 14, as shown in FIG. 3. Thehorizontally extending portion 47 of the blade element carries adepending cutting blade or knife 48 secured thereto as by screws 49, thecutting blade having a serrated cutting edge in this illustrated formand being secured to the forward face of the portion 47, as shown inFIGS. 3 and 4. As shown in FIG. 3, the cutting blade or knife 48 has thecutting edge thereof extending substantially between the arms 45 and 46,the cutting edge being considerably longer than the width of the feedroll 15, so that it may sever tapes which are t wider than the tapeshown in the drawings by way of illustration.

Substantially midway between the ends of the platelike part 40 there isprovided a lug 56 extending inwardly from the part 40 and closelyapproaching the feed roll 14, as best shown in FIG. 3. The lug 5i) maybe formed integrally with the part 44) and, as shown in FIGS. 3 and 4,is substantially flush with the highest point on the periphery of thefeed roll 14, the arrangement being such that the tape adhering to thefeed roll 14 travels over the lug 50 in overlapping and closely spacedrelation thereto. As will appear more fully hereinafter, this lugfacilitates the support of the tape during the cutting operation, and islocated closely adjacent to the cutting point. In the illustrated form,the lug 50 is disposed forwardly and closely adjacent the vertical pathof the cutting blade or knife 48.

The arrn 45 of the blade element is provided with an inwardly extendingintegrally formed lug 51 which, in this illustrated form, closelyapproaches one side of the feed roll 14. This lug is disposed at thedistal portion of the arm 45. As best shown in FIG. 3, the arm 46 of theblade element is provided with an inwardly extending integrally formedlug 52, intermediate the ends of the arm 46, which, in this illustratedform, closely approaches the other side of the feed roll 14. The lug 52constitutes a cam on the blade element 44, and is provided withdownwardly converging cam surfaces 53 for cooperation with a rotary camelement, indicated generally at 54, fast to the shaft 34.

The cam element 54, which is of wheel-like shape, may be integrallyformed with the feed roll 14. As shown in FIGS. 3 and 4, the cam wheel54 is of smaller diameter than the feed roll 14. The wheel 54 isprovided with substantially radially projecting cam lugs 55 arrangedcircumferentially on the wheel 54 at relatively close intervals, eachcam lug 55 being located circumferentially between two adjacenttape-severing stations 37. The distal end portion of each lug 55 isprovided with outwardly converging cam surfaces 56. As best shown inFIG. 4, the cam surfaces 56 meet in a knife-like point, as do the camsurfaces 53 of the cam lug 52. Inwardly of the outer points of the camlugs 55, each lug 55 defines between it and the next lug 55 a slot 57extending substantially radially inwardly, having in the presentinstance parallel side walls and terminating in a substantially hatbottom. The slots 57 are of approximately the same depth as the slots 37in the feed roll 14, as shown in FIG. 4. As will appear more fullyhereinafter, the cam 52 on the blade element 44 may cooperate with anytwo of the lugs 55 which are neighbors, the cam 52 being dimensioned toslide rather closely into the slot 57 formed by the opposing side wallsof these lugs 55.

To operate the blade element 44, an actuating arm 58 is provided, thearm being substantially vertically arranged and having the upper endthereof loosely connected to the lug 51 of the plate element, as byfastener 59, to permit limited vertical swinging movement of the arm 58.As shown in FIG. 5, the arm is bent outwardly, as at 60, to provideample clearance with the shaft 34. The lower end of the arm 5S has apivotal connection, as at 61, to a vertically arranged cam follower 62which is swingable in a vertical plane on a pivot 63 mounted in the sidewall 10 of the dispenser. As shown in FIG. 5 the pivot 63 is locatedrearwardly of the pivotal connection 61 between the arm 58 and the camfollower 62, and rearwardly of the pivot 63 the follower 62 is providedwith a substantially flat cam surface 64 cooperating with a 'rgtary cam65 fast on the shaft 30 for rotation therewit The cam 65 has edgewiseengagement with the cam surface 64 of the cam follower and, as shown inFIG. l, the cam 65 has an edge portion 66 which is substantially fiatand merges with a cam edge portion 67 formed substantially on a radiusof the shaft 30. A camming shoulder or nose 68 is formed at the junctionof the edge portions 66 and 67 and, as shown in the lastrnentioned view,the edge portion 66 is normally engaged with the cam surface 64 of thecam follower. A coil spring 69 has one end thereof xed to a pin 70extending through the side walls 1G and 11 of the dispenser, and theother end of the spring is connected to the actuating arm 58, as at 71,the arrangement being such that the spring 69 constantly urges theactuating arm 58 of the blade element 44 downwardly. A similar spring 72has one end thereof connected to the pin 76 and the other end thereofconnected to an eccentrically arranged pin 73 xed on the rotary cam 65.The spring 72 urges the rotary cam 65 in a counterclockwise direction asviewed in FIG. 1, the spring 72, acting through the cam 65, serving tonormally maintain the shaft 3i) in the angular position shown in FIG. 1in which the operating lever 17 occupies the position shown in thisview. When the cam 65 is in this position the forward end of the camfollower 62 is depressed and through the actuating arm 58 maintains thetape-severing means 18 in the position shown in FIG. 1. In this positionof the tape-severing means 18, the tape path is blocked by the cuttingblade or knife 48, the vertically slidable blade element 44 occupyingthe lowest position thereof.

Axially spaced from the rotary cam 65 in a direction toward the sidewall 11 of the dispenser there is provided a rotary plate-like cam 74fast to the shaft 30 for cooperation with the spool-carrying slide 22.The cam 74 has edgewise engagement with the lug 25 formed on thelastmentioned slide, the cam 74 having a substantially straight edgeportion 75 merging into an edge portion 76 formed substantially on aradius on the shaft 30. These edge portions at their junction form acamming shoulder or nose 77, as shown in FIG. 5.

As shown in the last-mentioned view, a coil spring 78 is provided tourge the spool-carrying slide 22 forwardly and against the cam 74, thespring 78 having one end thereof connected to the cam lug 25 by means ofa pin 79 and having the other end thereof connected to a pin 80 mountedin the side wall 11 and extending inwardly therefrom. The normal or restposition of the slide 22 is shown in FIG. l. As shown here the cam lug25 is in engagement with the cam surface 75 of the rotary ca m 74 andthe spool-carrying slide 22 is in its foremost position.

The operation of the tape dispenser will be manifest from the foregoingdisclosure. When the operating lever 17 is swung forwardly from its restposition, shown in FIG. l, upward movement of the tape-severing means 18is initiated before the start of the tape-feeding operation due to thelost-motion driving connection between the shaft 30 and the gear 31provided by the clutch 30a. As rotary movement of the shaft 30 isinitiated by operation of the lever 17 in a forward direction, the cam65 is rotated with the shaft to bring the camming shoulder or nose 68into engagement with the cam surface 64 of the cam follower 62, therebyswinging the follower in a counterclockwise direction, as viewed in FIG.l.

This movement raises the arm 58 pivotally interconnecting the follower62 with the blade element 44, and this movement of the arm slidablyraises the blade element 44 to clear the tape path before tape-feedingmovement of the roll 14 is initiated. During this movement of the bladeelement 44 the tape-severing knife or blade 48 is withdrawn from one ofthe slots 37 in the feed roll 14 into which it previously extended. Alsoduring this movement of the blade element 44 and the cam lug 52 thereonis withdrawn from the corresponding slot 57 in the rotary cam 54angularly rigid with the feed roll 14. When the blade element 44 israised to the position shown in FIG. 5 in the aforementioned manner, thefeed roll 14 and the rotary cam 54 are freed for rotation together uponrotation of the aforementioned gearing through continued forwardmovement of the operating lever 17.

However, prior to driving movement of the gear 31 driven from the shaft30 through the clutch 30a movement of the shaft 30 fast with the rotarycam 74 initiates movement of the latter in a clockwise direction, asviewed in FIG. 1, to bring the camming shoulder or nose 77 of thelast-named cam into engagement with the cam lug 25 on the spool-carryingslide 22 to cam the spool-carrying slide rearwardly against the pressureof the spring 78. This movement, of course, carries the tape supplyspool 15 and the tape roll 16 rearwardly.

Upon continued rotation of the operating lever in a clockwise directionas viewed in FIG. 1, the edge portion 76 of the last-mentioned cam isbrought into engagement with the cam lug 25 on the spool-carrying slideto maintain the slide in its rearmost position during the remainder ofthe clockwise rotation of the operating lever 17. At the same time thecontinued rotation of the cam 65 fast on the shaft 3d effects engagementof the edge portion 67 of the cam 65 with the cam surface 64 on thefollower 62 to maintain the rear end portion thereof in depressedcondition, thereby maintaining the blade element 44 in the raisedposition (FIG. 5) through the arm 58 during the remainder of theclockwise movement of the operating lever 17.

It will be understood from the foregoing that continued movement of theoperating lever in the last-mentioned direction effects driving movementof the gear 31 which meshes and drives the pinion 32 which in turnmeshes and drives the gear 35 angularly rigid with the feed roll 14 onthe shaft 34. This driving movement of the aforementioned gearing drivesthe feed roll in a clockwise direction as viewed in FIG. 1, therebystripping tape from the tape roll 16 and feeding tape forwardly on thelast-mentioned roll to which it adheres. When the desired length of tapehas been fed by the feed roll 14, the operating lever is released andpermitted to return to its normal or rest position, shown in FIG. 1,under influence of the spring 72 acting through the rotary cam 65 on theshaft 38. The spring 72 effects counterclockwise movement of the cam 65and shaft 30 as viewed in FIG. l, and during this movement of the shaftthe cam 74 angularly rigid therewith is rotated in a counterclockwisedirection as viewed in FIG. l, bringing the edge portion 75 thereof intoengagement with the lug 2.5 on the spool-carrying slide 22 whilepermitting the slide to move forwardly under the influence of the spring78. This movement of the spool-carrying slide effects a degree of slackin the tape extending between the tape roll 16 and the feed roll 14.

During the last-mentioned rotary movement of the shaft 319, the cam 65rigid therewith is rotated in a counterclockwise direction as viewed inFIG. 1, bringing the edge portion 66 thereof into engagement with thecam surface 64 of the follower 62, while permitting the rear end of thefollower 62 to be raised under the influence of the spring 69. Thelast-named spring effects downward movement of the forward end of thefollower 62 through the actuating arm 58. This spring draws the arm 58downwardly and in so doing draws the blade element 44 downwardly towardthe high point on the periphery of the feed roll 14. During thelast-mentioned movement of the cam 65 the pin 73 carried thereby mayengage a ange 62a of the follower 62, forcing the forward end of thefollower downwardly by a camming action and thereby supplementing theaction of the spring 69 in drawing the blade element 44 downwardly.

In this form, which is illustrated only by way of example and not bylimitation, the tape which is to be severed extends (FIGS. 3 and 4) overthe upper portion of the interrupted circumference of the tape roll 14,the tape extending over the outer ends of certain radially extendingslots 37 forming tape-severing stations. As indicated in FIG. 4, thetape extends across tape-severing stations at either side of the planeof operation of the movable blade element 44. As indicated in FIG. 3,the tape may 8 be considerably broader than the thickness of the tapefeed roll 14 and may extend a distance beyond one side face of thelast-mentioned roll for easy grasping by the user after the tape hasbeen severed. Also as indicated in the last-mentioned view, the tapeextends over the lug 50 in fixed relation to the side wall 1@ of thedispenser and providing a support for the tape closely adjacent thepoint at which it is to be eut.

The aforementioned slack in the tape effected by the forward movement ofthe spool-carrying slide 22 facilitates limited rotary movement of thefeed roll 14 in either direction to index the knife 48 with one of thetape-severing stations formed in the feed roll. As the blade element 44carrying the knife 43 descends under the influence of the spring-biasedarm S during counterclockwise movement of the operating lever 17 asviewed in FIG. l, the cam lug 52 formed on the blade element 44, unlessthe knife 43 is properly indexed with reference to one of thetape-severing stations, has its knife-like point engage one of theinclined surfaces 56 of one cam lug S5 in a manner similar to that shownin FIG. 4. As shown in the last-mentioned View, one of the inclinedsurfaces 53 of the cam lug 52 is engaged with one surface 56. Afterengagement of the cam lug 52 with one of the cam lugs 55 on the rotarycam 54, continued downward movement of the blade element under theinuence of the spring 69 effects rotary movement of the cam 54, thedirection of rotary movement of the cam 54 being dependent upon whichcam surface 56 of the lug 55 the cam lug 52 happens to strike. As shownin FiG. 4, the cam lug 52 has engaged one cam lug S5 to rotate the cam54 in a clockwise direction. Rotation of the cam 54 by the lug 52continues until the lug 52 enters the slot 57 formed by thelast-mentioned lug 55 and its neighbor. When this occurs thetape-severing knife 4S is properly indexed with the correspondingtapesevering station on the feed roll 14, which roll, of course, rotateswith the rotary cam S4.

Continued downward movement of the blade element 44 effects severing ofthe tape on the tape roll by the knife 48 as the latter moves toward itsfinal position, shown in FIG. l. In this position the knife 4S extendswithin one of the slots 37, and it will be noted that, as shown in thisview, the knife passes into the slot close to one side wall of the slot.Hence support of the tape on the periphery of the feed roll during thesevering of the tape is facilitated. After the severing operation hasbeen completed and the operating lever has returned to its restposition, the severed length of tape may be easily stripped from thefeed roll 14 by grasping the protruding portion thereof and lifting itoff the feed roll. As previously indicated, the extent to which the tapeprotrudes from one side face of the feed roll is dependent on the widthof the tape and the axial position of the tape roll 16 on the supplyspool 1S, the tape roll being axially adjustable on the spool 15.

The modiiied form illustrated in FIGS. 6 through l() is generallysimilar to the form previously described. Generally speaking, the twoforms differ in that in the modified form the tape roll has a stationaryaxis instead of a movable one, the feed roll is not gear driven, and thetape-severing means is electrically operated. In the form shown in FGS.6 through l0 the upstanding side walls of the pressure-sensitive tapedispenser are indicated generally at S1 and S2 and correspond generallyto the above-described side walls 1t? and 11. The side walls of themoditied form of the dispenser are rigidly interconnected by footedplate-like parts d3 similar to the parts 12 previously described. At therear portion thereof a removable shaft 84 extends between and issupported by the side walls 81 and 82, and this shaft supports a tapesupply spool $5 which in turn supports a tape roll 86. Forwardly of thetape roll 86 a shaft S7 extends between the aforementioned side wallsand is journaled therein. One end of the shaft 37 extends without` theside wall 31, and an operating lever 3S similar to the operating lever17 previously described has one end thereof fixed to the last-mentionedend of the shaft S7.

When the operating lever is in its rest position, it abuts a lug S9extending outwardly from the side wall 81. Intermediate the side wallsthere is provided a collar 90 made fast on the shaft 87 by a pin 91extending therethrough, the pin extending beyond the collar, as shown inFIG. 8. A coil spring 92 has one end thereof fixed to the pin 91 and theother end thereof secured to a pin 93 extending inwardly from the wallS1. The spring 92, acting through the collar 90, biases the shaft 87 ina direction to urge the operating lever 88 in a counterclockwisedirection, as viewed in FIG. 8. When the tape dispenser is at rest, theoperating lever is held against the stop 89 by the spring 92. A stop 94is provided to limit the distance of clockwise rotation of the operatinglever as viewed in FIG. 8, the stop 94 providing an abutment for thelever and being of the adjustable type. As shown in FIG. 8, the stop ismounted in an arcuate slot 95, formed on a radius of the shaft 87, foradjustment therein, all in accordance with conventional and well-knownpractice. The stop 94 may have a part thereof overlying marginalportions of the slot 95. The stop 94 may extend into the slot 95 andhave a threaded part, not shown, threaded into a clamping plate 96 to beclamped against the inner face of the wall S1 when the stop is in thedesired position and fully threaded into the plate 96, the clampingplate 96 being pivoted on the shaft 87.

A feed roll 9% is supported from the shaft S7 intermediate the sidewalls. A clutch, indicated generally at 99, which may be constructed inaccordance with United States Patent No. 2,866,502, forms a lost-motion,one-way driving connection between the shaft S7 and the feed roll 98 toeifect feeding movement of the roll 98 upon rotation of the shaft 87 ina clockwise direction as viewed in FIG. 8. A clutch, indicated generallyat 10i), and of the same type as the clutch 99 forms a connectionbetween the side wall 82 and the feed roll 98 to limit reverse rotationof the feed roll. The clutch 10i) has an element 101 embracing the shaftS7 in fixed relation to the side Wall 82 and mounted therein, and has anelement 162 fixed to the feed roll @8. The element 102 is constituted bya cup opening toward the side wall S2 and housing a coil spring 1%which, as manufactured, has an external diameter slightly greater thanthe internal diameter of the cup into which it is forced. One end of thespring 103 has a lostmotion connection, as at 104, with the clutchelement 101. The other end of the spring 103 is free, and thearrangement is such that reverse rotation of the feed roll is limited bythe tendency of the spring 103 to unwind and bind against the cup 162,all as is Well known in the art.

The feed roll 93 has an integrally formed rotary cam member 105corresponding to the rotary cam 54 previously described to cooperatewith a blade element 166 corresponding to the previously described bladeelement 44. The feed roll is formed similarly to the above-describedfeed roll 14 and is provided with tape-severing stations formed by slots107 in the periphery of the roll, the slots 1tl7 being somewhat narrowerthan the slots 37 in the roll 14. It will be understood from theforegoing that the blade element 106 is extensible into any one of theslots 107, for severing a length of tape adhering to the periphery ofthe roll which, of course, is interrupted by the slots 1M.

As viewed in FIG. 7, the blade element 166 which cooperates with thefeed roll is generally of inverted L shape, having the distal endportion of the horizontally extending leg thereof received in a slideway108 formed on the inner face of the side wall 81, as indicated in FIG.8. It may be noted here that this slideway, unlike the correspondingslideway 3S in the form of FIGS. l through 5, is somewhat inclined tothe vertical. The other leg of the L-shaped blade element 106 isprovided with a plate part 109 received in a slideway 110 formed on theinner face of the side wall 82. The plate part 109 rigid with thelast-mentioned leg is recessed at 111 to provide clearance for thestructure mounting the shaft S7 in the side wall 82 on downward slidingmovement of the blade element. The blade element 106 is provided (FIG.7) with a knife-like cam lug 112 corresponding to the cam lug 52previously described. The cam lug 112 cooperates with similar cam lugs113 formed at close intervals on the circumference of the rotary cam 105and corresponding to the previously described lugs 55 of the form ofFIGS. l through 5. The horizontally extending leg of the L-shaped bladeelement 106 carries the severing blade or knife 114 in dependingrelation thereto, as shown in FIG. 7.

As shown in the last-mentioned view and also in FIG. 8, a tape support115 corresponding to the previously described lug 50 extends inwardlyfrom the slideway 108. The tape support 115 may be formed convenientlyof a plastic or other suitable material characterized by low adhesion toadhesive materials and is supported from a bracket 116 (FIG. 8), fixedto one margin of the slideway 108, through fasteners 117. As shown inthe last-mentioned View, the upper surface of the tape support 115 issubstantially in alignment with a point on the periphery of the feedroll, and the tape support 115 is recessed, as at 115% to receive aportion of the knife 114 during each tape-severing operation. It will bemanifest from the foregoing that during the tape-severing operation thetape is supported in the area of the knife 114 partially by the feedroll 98 and partially by the support 115.

To facilitate the indexing of the tape-severing stations 107 with theknife 114 there is provided (FIG. 9), in addition to the cam means 112and 113 previously described, an elongated spring detent 118 having oneend supported from a lug 119 extending inwardly from the side wall 82.The distal end portion of the detent 118 is of inverted V shape toextend partially between any two of the knifelike lugs 113 and therebyurge the rotary cam member 105 and the feed roll fixed thereto in eitherrotary direction to align the knife 114 with one of the tape-severingstations 107. The detent 118 continually bears frictionally against therotary cam 105 provided with the cam lugs 113 and is pressed out of theway of these cam lugs by the pressure of the cam lugs thereagainst asthe rotary cam 105 is driven with the feed roll 98 to feed tape in aforward direction upon driving movement of th eshaft 87 in acounterclockwise direction as viewed in FIG. 9.

As previously indicated, the blade element 106 is operated electrically.As shown in FIG. 7, the side Wall 82 is provided with an upper outwardlyextending bracket portion 120 and a lower outwardly extending bracketportion 121, these portions being vertically spaced and in alignmentwith one another. The upper bracket portion 120 supports a solenoid 122and the lower bracket portion 121 supports a solenoid 123. The solenoid122 is provided with a conventional plunger-type core member 122a whilethe solenoid 123 is provided with a similar plunger 1233. Theaforementioned solenoids are arranged in opposing relation to oneanother and their plungers are interconnected as at 124. Abutments 125are provided on the respective plungers to coact with the respectivebracket portions of the side wall 82 to limit movement of the plungers.In this form illustrated in the drawings only by way of example and notby limitation, the solenoid 122, when energized, is operative to raisethe blade element 106 from its tape-blocking position shown in FIG. 7,while the solenoid 123, when energized, is operative to effect downwardmovement of the blade element 105 to sever a length of tape. Thesolenoids 122 and 123 are connected with the blade element 106 through astub shaft 125 carried by the aforementioned means 124 interconnectingthe solenoid plungers 122a and 1239. The stubshaft 126 extends through aclearance opening 127 formed in the side wall L152, and

the shaft 126, which may extend through the plate part 109 of the bladeelement, may be secured to the depending leg of the blade element 106 bybeing threaded therein. A switch, having an outwardly biased operatingmember 120a of the plunger type, 128 is mounted on the side wall 82 forcooperation with the shaft 126 in a manner which will appear fullyhereinafter. A main switch 129 is also mounted on the side wall S2 toextend outwardly therefrom, this switch being a two-position switch ofthe manually operated type. A switch 130 is mounted on the inner face ofthe side wall 01 as indicated in FIG. 8, the switch having an outwardlybiased operating member 130a of the plunger type which is normallydepressed by a leaf spring 131 having one end thereof mounted on theswitch 130 and having the other end thereof engageable by the pin 91carried by the shaft 87. The spring 131 is biased away from theoperating member 13021, and in the normal rest position of the operatinglever 88 shown in FIG. 8 is engaged by the pin 91 to maintain theoperating member 130a in the depressed position.

The operation of the tape dispenser shown in FIGS. 6 through l0 will beapparent from the foregoing disclosure. With the shaft 04 removed fromone of the side walls 81 and S2, the tape roll 05 may be mounted on thesupply spool 85 prior to reassembly of the shaft 811 with theaforementioned side wall. The end of the tape is trained over the upperperipheral portion of the feed roll 98, as shown in FIG. 6, the tapeprojecting from the right-hand face of the roll as viewed in FIG. 7.When it is desired to serve a length of tape, the main switch is closedand thereafter the operating lever 88 is swung forwardly from its restposition, shown in FIG. 6, to initiate driving movement of the roll 98through the shaft 87 and the clutch 99. The lost-motion drivingconnection of the clutch 99 between the shaft 87 and the feed roll 90permits limited rotation of the shaft 87 in a driving direction withoutmovement of the feed roll 98. This movement of the shaft 07 issufficient to move the pin 91 carried thereby a distance to permit theleaf spring 131 to release the spring-biased-operating member 130a ofthe switch 130 and thereby close the switch, establishing a circuit (seeFIG. 10) including the solenoid 122. When this solenoid is energized theblade element 106 is raised to clear the tape path through upwardsliding movement of the shaft 126 in fixed relation to the plunger 122aof the last-named solenoid.

Continued forward movement of the operating lever 88 effects forwardfeeding movement of the tape by the roll 93 to which the tape adheres,the last-named roll being driven through the clutch mechanism 99interposed between the shaft 87 and the feed roll 98. This drivingmovement of the feed roll, of course, also effects rotation of therotary cam in iixed relation thereto. It should be noted here that priorto feeding movement of the feed roll 93 the switch 12S, which isnormally open, is closed. The spring-biased operating member 123a of thelast-mentioned switch is normally maintained in depressed position bythe vertically slidable shaft 126. As this shaft is raised with theblade element 106 to clear the tape path, the switch-operating memberunder the influence of its spring is permitted to follow the movement ofthe shaft 126 a distance to close the switch 120.

When the desired length of tape has been fed forwardly by the feed roll106, the operating lever is released and is thereafter returned to itsrest position under the iniluence of the spring 92. The clutch 100between the side wall 82 and the feed roll 93 limits reverse movement ofthe feed roll but permits sutlicient reverse rotation of the feed rollto properly index the blade element 106 with one of the tape-severingstations 107 on the feed roll. At the end of the return movement of theoperating lever 88 to its rest position, the switch 130 is againoperated by re-engagement of the pin 91 with the leaf spring 131 toagain depress the spring-biased switch-operating member 1301. When thisoccurs, the circuit which includes the solenoid 122 is opened while theswitch establishes a circuit which includes the solenoid 123 and theswitch 12S which is then in closed condition as previously described.When the solenoid 123 is energized its plunger 123a is operated to drawthe blade element 106 downwardly through the vertically slidable shaft126. During this downward movement the lug 112 formed on the bladeelement 106 cooperates with the rotary cam 105 to properly index theknife 114 with one of the tape-severing stations 107, and this indexing,as previously indicated, is facilitated by the cooperation of the detent113 with the cam 1115. As the blade element 106 is moved downwardly bythe solenoid 123, the knife 114 severs the tape and thereafter the shaft126 re-engages the springbiased operating member 123a of the switch 128to depress the last-named operating member and thereby open the switch12S, breaking the circuit in which the solenoid 123 is included. It willbe manifest from the foregoing that due to the arrangement of theswitches 128 and 130, the solenoids 122 and 123 are de-energized whenthe main switch 129 is closed and the tape-severing mechanism is atrest. After a length of tape has been severed in the aforementionedmanner, the severed length, which protrudes laterally from the feedroll, may be grasped by the user and stripped from the roll.

In FIGS. ll and 12 there is shown a modified form of clutch mechanismwhich, while not limited thereto, may be conveniently employed in atape-dispensing mechanism similar to that shown in FIGS. 6 through 10. Imake no claim to the particular clutch mechanism but only illustrate anddescribe it as a typical mechanism which may be employed in a tapedispenser embodying the invention. In FIG. 11 the feed roll, indicatedat 133, similar to the feed roll 98 is shown on a shaft 134 which may besuitably journaled. A clutch mechanism 135, which may be identical tothe previously described clutch mechanism 14N), is interposed betweenthe feed roll 133 and one side Wall, not shown, of the dispenser tolimit rotation of the feed roll in a direction opposite the feedingdirection. A clutch mechanism indicated generally at 135 is interposedbetween the shaft 134 and the feed roll 133 to effect rotation of thefeed roll in a feeding direction during rotation of the shaft 134 in thecorresponding direction.

The clutch mechanism 136 comprises two spool members 137 and 133embracing the shaft 134 and arranged in end-to-end relationship. Thespool member 137 has a flange 139 secured to the feed roll 133 as byfasteners 14?. The spool member 133 has as an integrally formed portionthereof a collar 141 corresponding to the previously described collar 90and pinned to the shaft by a pin 142 corresponding to the previouslydescribed switchactuating pin 91. As indicated in FIG. 12, the opposingends of the spool members 137 and 138 approach each other closely. Thespool member 137 has a circumferential surface portion 143 which is ofgreater diameter than the adjoining circumferential surface portion 144.In the illustrated form the surface 143 is provided by a raised portionof the spool member 137, that is, it is not formed merely by reducingthe adjoining surface portion which forms the surface 144. In otherwords, the surface portion 143 is formed by a land on the spool member137 in the illustrated form. The surface portion 144 extends betweenthis land and the end of the spool member 137 which is in opposingrelation to the spool member 13S. The areas of the surfaces 143 and 144are approximately equal in the illustrated form.

The spool member 138 is similarly constructed in the areas correspondingto the areas 143 and 144 previously described. The member 133 isprovided with a land which effects a raised surface 145, and betweenthis land and the end of the spool member 133 opposing the spool member137 the member 133 is provided with a surface 146 which, like thesurface 145, is a circumferential surface but of smaller circumferentialdimension. A coil spring 147 embraces portions of both of tbe spoolmembers 137 and 138, the spring having its ends free of restraint. Theend portions of the spring 147 overlie the respective raised surfaces143 and 145 and the spring 147 is so constructed that it must beexpanded somewhat from its manufactured size to be assembled with theaforementioned spool members. When the spring 147 is at rest, theportion of the spring extending between the lands providing the raisedsurfaces 143 and 145 is of substantially the same diameter as the endportions of the spring which portions frictionally grasp the surfaces143 and 145, and the aforementioned intermediate portion of the springis out of Contact with the surfaces 145 and 146 which are of smallercircumference.

When the shaft 141 is rotated in a direction to rotate the feed roll 133in a feeding direction, corresponding movement of the spool 138 fast onthe shaft tends to wind up the coil spring 147. The right end portion ofthe spring 147 as viewed in FIG. l2, may have little tendency to wind upduring the last-mentioned rotary movement of the shaft 141 due to themanner in which this end portion of the spring is firmly supported fromwithin by the land which forms the surface 145 against which the springbears tightly. However, due to the gap between turns ofthe spring andthe surface 146 of the spool 138 these turns may wind up to some extentwithout frictionally engaging the spool 138. It will be understood thatthe spring tends to be wound up from the last-mentioned end. As thelast-mentioned turns of the spring 147 are wound up, they in turn tendto wind up coils p overlying the surface 144 of the spool 137 andoutwardly spaced therefrom. The last-named coils may be wound up to someextent without frictionally binding against the spool 137 prior to anywinding tendency of those coils which frictionally overlie and grip thesurface 143 provided by the land on the spool 137. It will be understoodfrom the foregoing that due to the drag on the spool member 137 effectedby the tape extending from the roll 35 and adhering to the feed roll 133secured to the member 137, the spring 147 imparts a lost-motion onewaydriving connection between the spool members, in other words, theintermediate turns of the spring 147 may be Wound up to some extentbefore driving movement of the spool 137 and the feed roll 133 isinitiated. This permits in the instant form movement of theshaft-carried pin 142 corresponding to the switch-operating pin 91previously described prior to feeding movement of the roll 133.

It will be further understood that when the shaft 141 is rotated in theopposite direction, there is a tendency of the spring to expand, thatis, unwind, and owing to this tendency no driving connection is effectedfrom the spool 138 to the spool 137. It will be noted that in the formof the clutch mechanism illustrated by way of example in the drawingsthe metal strand from which the spring 147 is formed has a rectangularcross section as opposed to a round one. This cross-sectional form ofthe strand tends to prevent a turn of the spring from entering the spacebetween the opposing ends of the spool members and becoming lodgedtherein. Of course, a spring formed of a strand of round cross sectionmay be employed in the clutch mechanism if desired.

From the foregoing disclosure it will be manifest that there is provideda tape dispenser having an improved tape-feeding roll to which the tapeadheres and from which tape may be readily stripped by a manualoperation. It will also be manifest that there is provided in thedispenser improved means for severing lengths of tape served from thedispenser. The tape-severing means also coopcrates with the feed roll ina novel and improved manner, and there is provided simple and yet veryeffective means for indexing the severing means with tape-severingstations on the feed roll. It will also be apparent that the dispenserincludes novel and eicient cam means for effecting movements of variousmovable parts in the dispenser.

While several forms of the tape dispenser have been 'illustrated in thedrawings and described above, it will be apparent to those versed in theart that the dispenser may take other forms and is susceptible ofvarious changes in details without departing from the principles of theinvention and the scope of the appended claims.

What I claim is:

1. A tape dispenser comprising a frame, a supply roll ofpressure-sensitive tape mounted therein, said tape being tacky on atleast one surface thereof, a rotatably mounted feed roll carried by theframe and to the periphery of which a tacky side of the tape adheres tobe drawn from the supply roll when the feed roll is rotated in atapefeeding direction, means for rotating the feed roll in thelast-named direction, the feed roll having a multiplicity of radiallydirected interruptions in its peripheral surface over a plurality ofwhich interruptions thetape extends as it is advanced, a tape-severingblade supported for radial movement between a retracted position spacedradially outwardly from the periphery of said feed roll to a tapesevering position within a registering one of said interruptions, meansfor moving said blade between said retracted and severing positions, androll-indexing means adjacent said feed roll and said blade for lockingsaid feed roll against accidental rotation thereof when said blade is inthe tape-severing position and for insuring registration of one of saidroll-surface interruptions With the blade during movement of the bladefrom retracted toward tape severing position irrespective of theposition to which said feed roll has been moved by said feed rollrotating means.

2. The tape dispenser according to claim 1 wherein the means for movingthe blade is electrically operated and is controlled by said means forrotating the feed roll.

3. The tape dispenser according to claim l wherein the means forrotating the feed roll comprises a feed-rolldriving shaft operated bymanipulation of a lever, said shaft being connected to the feed rollthrough a one-way, lost-motion clutch mechanism, and said means formoving said blade being electrically operated and controlled by movementof said shaft.

4. The tape dispenser according to claim 2 wherein said means for movingsaid blade comprises a first solenoid for moving said blade towardretracted position and a second solenoid for moving said blade towardtape severing position.

5. The tape dispenser according to claim I wherein there is means forslackening the portion of the tape extending between the supply and feedrolls following tape feeding movement of said feed roll and prior to theindexing of the feed roll, to facilitate the indexing.

6. The tape dispenser according to claim 1 wherein the supply roll ismounted for movement toward and away from the feed roll between rst andsecond positions respectively, and means is provided to effectdisposition of the supply roll in said second position during tapefeeding movement of said feed roll and to move said supply roll to saidrst position following such feed roll movement and prior to the indexingof the feed roll, to create slack in the portion of the tape extendingbetween the rolls and thereby facilitate the indexing operation.

7. A tape dispenser comprising a frame, a supply roll ofpressure-sensitive tape mounted therein, said tape being tacky on atleast one surface thereof, a rotatably mounted feed roll carried by theframe and to the periphery of which said tacky side of the tape adheresto be drawn from the supply roll when the feed roll is rotated in atape-feeding direction, means for rotating the feed roll in thelast-named direction, the feed roll having a multiplicity of radiallydirected interruptions in its peripheral surface over a plurality ofwhich interruptions the tape extends as it is advanced, a tape-severingblade slidably supported, the blade being radially slidable into anyregistering one of said interruptions in the peripheral surface of thefeed roll to sever a length of tape on the lastnamed roll, meansadjacent said feed roll and said blade to index the feed roll withreference to the blade prior to the severing operation and subsequent tothe feeding operation to effect registration of one of said roll-surfaceinterruptions with the blade, and means to move the blade to clear the-tape path during the feeding operation and move the blade to sever thetape and extend the blade into the registering peripheral-surfaceinterruption of the feed roll in tape-blocking position subsequent tothe feeding operation, the last-named means being electrically operatedand movement of the blade to the tape-path-clearing position beingcontrolled by said means for rotating the feed roll in a feedingdirection.

8. A tape dispenser comprising a frame, a supply roll ofpressure-sensitive tape mounted therein, said tape being tacky on atleast one surface thereof, a rotatably mounted feed roll carried by theframe and to the periphery of which a tacky side of the tape adheres tobe drawn from the supply roll when the feed roll is rotated in atapefeeding direction, means for rotating the feed roll in thetape-feeding direction, the feed roll having a multiplicity ofradially-directed interruptions on its peripheral surface over aplurality of which inten'uptions the tape extends as it is advanced, atape-severing blade supported for radial movement between a retractedposition spaced radially outwardly from the periphery of said feed rollto a tape-severing position within a registering one of saidinterruptions, means associated with said means for rotating the feedroll for moving said blade between said retracted and severingpositions, and roll indexing means adjacent said feed roll andcooperating with said tapesevering blade for preventing accidentalrotation of said feed roll when said blade is in the tape-severingposition and for insuring registration of one of said roll surfaceinterruptions with the blade during the movement of the blade from theretracted toward the tape-severing position irrespective of the positionto which said feed roll has been moved by said feed roll rotating means.

9. A tape dispenser as defined in claim 8, wherein the means to move theblade to and from said positions thereof is operated electrically, andthe movement of the blade to the ready position thereof is controlled bythe means for rotating the feed roll in the feeding direction.

10. A tape dispenser as dened in claim 8, wherein means is provided toslacken the tape extending between the rolls prior to the indexing ofthe feed roll, to facilitate the indexing.

11. A tape dispenser as defined in claim 8, wherein one of said rollshas its axis movably mounted for movement of the roll generally towardand away from the other, 'and means is provided to iirst move saidmovable roll away from the other and then toward it prior to theindexing of the feed roll, to create slack in the tape extending betweenthe rolls and thereby facilitate the indexing operation.

12. A tape dispenser as defined in claim 11, in which the axiallymovable roll is the tape supply roll and wherein the supply roll iscarried by a slide mounted in the frame for movement generally towardand away from the other roll, and the means for moving the supply rollin the last-named direction is operatively interposed between said slideand said means for rotating the feed roll.

13. A tape dispenser comprising a frame, a supply roll ofpressure-sensitive tape mounted therein, said tape being tacky on atleast one surface thereof, a rotatably mounted feed roll carried by theframe and to the periphery of which said tacky side of the tape adheresto be drawn from the supply roll when the feed roll is rotated in atape-feeding direction, the feed roll having a multiplicity ofcircumferentially, relatively closely spaced, and radially directedtape-severing stations thereon over which stations the tape extends asit is advanced, a tape-severing blade slidably supported in the framefor radial movement relative to said feed roll, the blade being slidableto sever tape at any one of said tape-severing stations and therebysever a length of tape on the feed roll, the blade having a position inwhich it clears the tape path and a tape- 15 blocking position to whichit moves to sever the tape, means to rotate the feed roll in a feedingdirection, means associated with the feed roll to index the feed rollwith reference to the blade prior to the severing operation andsubsequent to the feeding operation to effect registration of one ofsaid tape-severing stations with the blade, said means for rotating thefeed roll in a feeding direction comprising a lost-motion drivingconnection between a rotary shaft supported in the frame and the feedroll, a iirst solenoid operatively connected to the blade to move thelatter to the tape-path-clearing position thereof, a second solenoidoperatively connected to the blade to move the latter to thetape-path-blocking position thereof, means operative from the means torotate the feed roll in a feeding direction to energize the rst solenoidprior to feeding movement of the last-named roll to move the blade outof the tape-path-blocking position thereof, means operative uponmovement of the blade to i the tape-path-clearing position thereof andupon termination of the tape-feeding operation to tie-energize the firstsolenoid and energize the second solenoid to effect severing movement ofthe blade, and means operative upon the last-named movement of the bladefor de-energizing the second solenoid after the tape has been severed.

References Cited in the le of this patent UNITED STATES PATENTS Re.22,981 Fitch Mar. 9, 1948 749,031 Creed Jan. 5, 1904 2,379,271 BechtelJune 26, 1945 K 2,384,575 Stull Sept. 11, 1945 2,444,019 Krueger June22, 1948 2,492,593 Quinlan Dee. 27, 1949 2,595,060 Dixon Apr. 29, 19522,830,662 Marcum Apr. 15, 1958 UNITED STATES PATENT OFFICE CERTIFICATEOF CORRECTION Patent Na, 3,1143o19 August, 4 1964 Alfred P Krueger 1b ishereby certified, that errer appears in J@be above numbered patenitlrequiring correction and that the said Letters Patent should read ascorrected below.

Column l,l lines 25 and 3li for "cuttng each occurrenceY read cuttingcolumn 5,J line 67 strike out, "and"e (SEAL) Attest:

EDWARD J. BRENNER Commissionerof Patents ERNEST 1w. sw-IDER' AfttestingYOfficer

1. A TAPE DISPENSER COMPRISING A FRAME, A SUPPLY ROLL OFPRESSURE-SENSITIVE TAPE MOUNTED THEREIN, SAID TAPE BEING TACKY ON ATLEAST ONE SURFACE THEREOF, A ROTATABLY MOUNTED FEED ROLL CARRIED BY THEFRAME AND TO THE PERIPHERY OF WHICH A TACKY SIDE OF THE TAPE ADHERES TOBE DRAWN FROM THE SUPPLY ROLL WHEN THE FEED ROLL IS ROTATED IN ATAPEFEEDING DIRECTION, MEANS FOR ROTATING THE FEED ROLL IN THELAST-NAMED DIRECTION, THE FEED ROLL HAVING A MULTIPLICITY OF RADIALLYDIRECTED INTERRUPTIONS IN ITS PERIPHERAL SURFACE OVER A PLURALITY OFWHICH INTERRUPTIONS THE TAPE EXTENDS AS IT IS ADVANCED, A TAPE-SEVERINGBLADE SUPPORTED FOR RADIAL MOVEMENT BETWEEN A RETRACTED POSITION SPACEDRADIALLY OUTWARDLY FROM THE PERIPHERY OF SAID FEED ROLL TO A TAPESEVERING POSITION WITHIN A REGISTERING ONE OF SAID INTERRUPTIONS, MEANSFOR MOVING SAID BLADE BETWEEN SAID RETRACTED AND SEVERING POSITIONS, ANDROLL-INDEXING MEANS ADJACENT SAID FEED ROLL AND SAID BLADE FOR LOCKINGSAID FEED ROLL AGAINST ACCIDENTAL ROTATION THEREOF WHEN SAID BLADE IS INTHE TAPE-SEVERING POSITION AND FOR INSURING REGISTRATION OF ONE OF SAIDROLL-SURFACE INTERRUPTIONS WITH THE BLADE DURING MOVEMENT OF THE BLADEFROM RETRACTED TOWARD TAPE SEVERING POSITION IRRESPECTIVE OF THEPOSITION TO WHICH SAID FEED ROLL HAS BEEN MOVED BY SAID FEED ROLLROTATING MEANS.